Molli, G., Crispini, L., Malusà, M., Mosca, P., Piana, F. and Federico, L. 2010.   Geology of the Western Alps-Northern Apennine junction area: a regional review. In: (Eds.) Marco Beltrando, Angelo Peccerillo, Massimo Mattei, Sandro Conticelli, and Carlo Doglioni, The Geology of Italy: tectonics and life along plate margins, Journal of the Virtual Explorer, Electronic Edition, ISSN 1441-8142, volume 36, paper 10, doi:10.3809/jvirtex.2010.00215

Geology of the Western Alps-Northern Apennine junction area: a regional review

Giancarlo Molli

Dipartimento di Scienze della Terra, Università di Pisa, Italy. <gmolli@dst.unipi.it>

Laura Crispini

Dipartimento per lo Studio del Terriorio e delle sue Risorse, Università di Genova

Marco G. Malusà

Laboratorio di Petrografia del Sedimentario, Dipartimento di Scienze Geologiche e Geotecnologie, Università di Milano-Bicocca, 20126 Milano, Italy

Pietro Mosca

CNR - Istituto di Geoscienze e Georisorse (unità di Pisa e di Torino)

Fabrizio Piana

CNR - Istituto di Geoscienze e Georisorse (unità di Pisa e di Torino)

Laura Federico

Dipartimento per lo Studio del Terriorio e delle sue Risorse, Università di Genova

Abstract

This paper aims at describing some aspects of the Alps-Apennines orogens and their relationship in space and time with special focus on their junction area. After an historical outline of the subject, the main morphostructural, geophysical and tectonic domains of the system will be outlined. The result of recent research and a review of structural and thermochronometric data of the exhumed units in the mountain belts and on the sedimentation and deformation record in the surrounding basins will be used to constrain key events of the geological history. An analysis of crustal-scale cross sections across the Western Alps, Northern Apennine and Western Po Plain altogether with a presentation of the main exposed and buried boundary faults and their time activity are presented. We will try to constrain the evolution of the Western Alps/Northern Apennine junction area by analyzing and comparing the main elements of the growing and interfering segments of the orogens providing some remarks on recently proposed kinematic interpretations and point out open problems and our ongoing research.

Keywords: Apennines, Alps, Alps-Apennines boundary, Tertiary Piedmont Basin, Boundary Faults, Tectonics, Fission track data, Italy